WARNING: Proposition 65 Compliance Statement
It is the responsibility of Boost Projects to warn its customers and employees that some products sold on this website contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Go to https://www.p65warnings.ca.gov for more information.

Retainer angles are held to within 6’ (minutes) (this is a tenth of a degree) and installed heights are held to within .005”!

Titanium retainers are a must for your high RPM Sport Compact engine. Their lighter mass allows the tuner to turn higher engine speeds and still avoid dangerous valve float; without sacrificing reliability.